<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="http://www.imjacky.com/js/jquery-2.1.1.js"></script>
    <script src="jquery.lazyloading.js"></script>
    <style>
        .my-block {
            height: 500px;
            width: 100%;
        }

        .red {
            background-color: red;
        }

        .blue {
            background-color: blue;
        }

        img {
            width: 100px;
            height: 100px;
            border: 1px solid red;
        }
    </style>
</head>
<body>
<div class="my-block red"></div>
<div class="my-block blue"></div>
<div class="my-block red"></div>
<img src="#" data-href="http://www.imjacky.com/blog/wp-content/uploads/2014/07/self.png">
<script>
    $("img").lazyloading({delay:500});
</script>
</body>
</html>